Induced Gamma-Band Activity and Human Brain Function

@article{Kaiser2003InducedGA,
  title={Induced Gamma-Band Activity and Human Brain Function},
  author={Jochen Kaiser and Werner Lutzenberger},
  journal={The Neuroscientist},
  year={2003},
  volume={9},
  pages={475 - 484}
}
Oscillatory activity in the gamma-band range has been related both to gestalt perception and to cognitive functions such as attention, learning, and memory. After giving a brief account of recent findings from electroencephalography and intracortical recordings, the present review will focus on spectral activity in the magnetoencephalogram. Here, gamma-band effects are topographically more local and involve higher frequencies than in the electroencephalogram. Bottom-up-driven auditory spatial… 

Figures from this paper

Cortical Oscillatory Activity and the Dynamics of Auditory Memory Processing
TLDR
Investigation of oscillatory signals in magnetoencephalogram (MEG) during different types of auditory processing found that oscillatory activity in MEG may provide unique information about both the activity of local networks and cortico-cortical integration.
Cortical oscillatory activity during spatial echoic memory
TLDR
Spatial echoic memory is performed by networks along the putative auditory dorsal stream, without requiring an involvement of prefrontal executive regions, according to the previous short‐term memory study.
Frontal gamma-band activity in magnetoencephalogram during auditory oddball processing
TLDR
GBA was increased over left inferior frontal cortex, replicating previous results of putative auditory ventral stream activation during passive pattern deviance processing, and additional GBA enhancements over superior frontal cortex were specific to active target detection.
Frontal midline theta rhythm and gamma power changes during focused attention on mental calculation: an MEG beamformer analysis
TLDR
Spatially filtered MEG and permutation analysis was used to precisely localize cortical generators of the magnetic counterpart of Fmθ, as well as other sources of oscillatory activity associated with mental calculation processing (i.e., arithmetic subtraction), confirming and extended earlier EEG/MEG studies indicating that Fm θ during mental calculation is generated in the dorsal anterior cingulate and adjacent medial prefrontal cortex.
Multisensory processing and oscillatory gamma responses: effects of spatial selective attention
TLDR
An EEG study investigating the interactions between multisensory (audio-visual) integration and spatial attention, using oscillatory gamma-band responses (GBRs) found that attention particularly affects the integrative processing of audiovisual stimuli at these early latencies.
...
...

References

SHOWING 1-10 OF 79 REFERENCES
Dynamics of Gamma-Band Activity during an Audiospatial Working Memory Task in Humans
TLDR
Gamma-band activity during the volume task may reflect auditory pattern encoding in auditory ventral stream areas and increased coupling between networks serving representation of audiospatial information and frontal executive systems seems to activate frontal and parietal neuronal ensembles.
Modulation of induced gamma band activity in the human EEG by attention and visual information processing.
  • M. Müller, T. Gruber, A. Keil
  • Psychology
    International journal of psychophysiology : official journal of the International Organization of Psychophysiology
  • 2000
Functional mapping of human sensorimotor cortex with electrocorticographic spectral analysis. II. Event-related synchronization in the gamma band.
TLDR
Gamma ERS may provide complementary information about cortical neurophysiology that is useful for mapping brain function in humans, and maps of sensorimotor function inferred from gamma ERS were consistent with maps generated by cortical electrical stimulation for clinical purposes.
Dynamics of gamma-band activity induced by auditory pattern changes in humans.
TLDR
The results support the hypothesized role of anterior temporal/ventral prefrontal regions in the processing of auditory pattern change and extend earlier findings of gamma-band activity over posterior parieto-temporal cortex during auditory spatial processing that supported the putative auditory dorsal stream.
Human Gamma Band Activity and Perception of a Gestalt
TLDR
The topography of gamma band spectral power and event-related potentials in human EEG associated with perceptual switching effected by rotating ambiguous (bistable) figures support the notion that formation of a visual percept may involve oscillations in a distributed neuronal assembly.
Induced gamma-band activity during the delay of a visual short-term memory task in humans.
It has been hypothesized that visual objects could be represented in the brain by a distributed cell assembly synchronized on an oscillatory mode in the gamma-band (20-80 Hz). If this hypothesis is
Visually induced gamma‐band responses to coherent and incoherent motion: a replication study
TLDR
The present results suggest that oscillations in the gamma- and the alpha-bands are two different brain activities, with different functional implications.
...
...